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an ice skater skates 15m southwest then 30meast and finally 45m in a direction 52.5 north of east.Find the magnitude of the displacement required to bring the skater back to her original position
An object is moving in an easterly direction at 4.5 m/s when it is suddenly struck so that it moves in a direction 60 degrees south of east . This force acts on the object for 5 seconds causing it to accelerate at 0.5 m/s^2 . At what speed is the object moving when the force no longer acts on it ?
Problem solving .show your solution 1.An object is released from rest.How far does it fall during the 2nd second of its fall?
Vector B~ has x, y, and z components of 6, 9.1, and 5.7 units, respectively. Calculate the magnitude of B~ .
A cat chases a mouse across a 1.0 m high table. The mouse steps out of the way, and the cat slides off the table and strikes the floor 2.9 m from the edge of the table. The acceleration of gravity is 9.81 m/s 2 . What was the cat’s speed when it slid off the table? Answer in units of m/s.
A cheetah can run at a maximum speed 92 km/h and a gazelle can run at a maximum speed of 72.7 km/h. If both animals are running at full speed, with the gazelle 72.9 m ahead, how long before the cheetah catches its prey? Answer in units of s.
A machine gun Fires 50gm bullets at a speed of 1000m/s. The gunner, holding the machine gun in his hands, can exert an average force of 180N against the gun. Determine the maximum number of bullets he can fire per minute
A cheetah can run at a maximum speed 105 km/h and a gazelle can run at a maximum speed of 76 km/h. If both animals are running at full speed, with the gazelle 79.2 m ahead, how long before the cheetah catches its prey? Answer in units of s.
Determine the horizontal force P required to start moving the 500 N block as shown in figure 3 up the inclined surface. Assume μs= 0.3.
Figure 3.
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